A cutting tool includes a bearing member, a first cutting member, a second cutting member, a manipulation member, an avoidance part and a measuring member. The first cutting member is fixedly disposed on one side of the bearing member. The second cutting member is pivotable about a first axle provided on the bearing member, and the manipulation member is pivotable about a second axle provided on the bearing member. The manipulation member and the second cutting member make up an effort-saving lever, in which the manipulation member drives the second cutting member to move.

A cutting device, including a frame, a cutting blade, which is fastened to the frame for pivoting about a first pivot axis, and a reduction transmission, which converts each forward pivoting movement of a plurality of successively performed forward pivoting movements and backward pivoting movements of a drive arm into a cutting pivoting movement of the cutting blade. A cutting-blade back-pivoting apparatus is provided, by which the cutting blade can be pivoted back from a pivoting end position to an initial position. The back-pivoting apparatus has, in particular, a tension element, which acts on the cutting blade in such a way that a clearance is formed.

A cutting device, including a frame, a cutting blade, which is fastened to the frame for pivoting about a first pivot axis, and a reduction transmission, which converts each forward pivoting movement of a plurality of successively performed forward pivoting movements and backward pivoting movements of a drive arm into a cutting pivoting movement of the cutting blade. A cutting-blade back-pivoting apparatus is provided, by which the cutting blade can be pivoted back from a pivoting end position to an initial position. The back-pivoting apparatus has, in particular, a tension element, which acts on the cutting blade in such a way that a clearance is formed.

A powered shearing mechanism or cutter is disclosed that comprises an asynchronous double class 1 lever and a linear actuator that uses two ganged wheels to pry the effort portion of both levers open and close the jaws. The wheels move linearly—with the distance between them kept constant—and roll along—and exert force against—parts of the levers called “bearing surfaces.” The bearing surfaces are non-planar and reflectively symmetric and their profile is customized to provide any desired ideal mechanical advantage for the cutter. In accordance with the illustrative embodiment, the profile of the bearing surfaces is a circular arc, which provides a bearing surface which is easy to precisely fabricate and that provides a fairly constant ideal mechanical advantage at each point as the cutter's blades cut through the material.

A powered shearing mechanism or cutter is disclosed that comprises an asynchronous double class 1 lever and a linear actuator that uses two ganged wheels to pry the effort portion of both levers open and close the jaws. The wheels move linearly—with the distance between them kept constant—and roll along—and exert force against—parts of the levers called “bearing surfaces.” The bearing surfaces are non-planar and reflectively symmetric and their profile is customized to provide any desired ideal mechanical advantage for the cutter. In accordance with the illustrative embodiment, the profile of the bearing surfaces is a circular arc, which provides a bearing surface which is easy to precisely fabricate and that provides a fairly constant ideal mechanical advantage at each point as the cutter's blades cut through the material.

A cutting device, including a frame, a cutting blade, which is fastened to the frame for pivoting about a first pivot axis, and a reduction transmission, which converts each forward pivoting movement of a plurality of successively performed forward pivoting movements and backward pivoting movements of a drive arm into a cutting pivoting movement of the cutting blade. A cutting-blade back-pivoting apparatus is provided, by which the cutting blade can be pivoted back from a pivoting end position to an initial position. The back-pivoting apparatus has, in particular, a tension element, which acts on the cutting blade in such a way that a clearance is formed.

A cutting device, including a frame, a cutting blade, which is fastened to the frame for pivoting about a first pivot axis, and a reduction transmission, which converts each forward pivoting movement of a plurality of successively performed forward pivoting movements and backward pivoting movements of a drive arm into a cutting pivoting movement of the cutting blade. A cutting-blade back-pivoting apparatus is provided, by which the cutting blade can be pivoted back from a pivoting end position to an initial position. The back-pivoting apparatus has, in particular, a tension element, which acts on the cutting blade in such a way that a clearance is formed.

A tool for cutting a panel made of reconstituted material comprises a fixed support on which a blade is mounted so as to be able to pivot. A slot is provided which is designed to receive at least part of the blade during cutting. A movable support is mounted so as to be able to move about the rotation pin (21), between an engagement position in which the movable support is arranged along the longitudinal edges of the slot of the fixed support, and a retracted position in which the movable support is arranged spaced apart from the longitudinal edges of the slot of the fixed support. The movable support comprises a slot of width smaller than the width of the slot of the fixed support and greater than the width (Lt) of the blade.

A tool for cutting a panel made of reconstituted material comprises a fixed support on which a blade is mounted so as to be able to pivot. A slot is provided which is designed to receive at least part of the blade during cutting. A movable support is mounted so as to be able to move about the rotation pin (21), between an engagement position in which the movable support is arranged along the longitudinal edges of the slot of the fixed support, and a retracted position in which the movable support is arranged spaced apart from the longitudinal edges of the slot of the fixed support. The movable support comprises a slot of width smaller than the width of the slot of the fixed support and greater than the width (Lt) of the blade.

The present invention relates to a tool for forming a joint in an interlocking side-lapped seam formed between first and second structural decking panels. The decking tool may include a frame, actuator, and arms with jaws, wherein the actuator forms a structural component of the decking tool and is located between the frame and the arms with the jaws. Moreover, the decking tool may further comprise one or more shields and jaw guards. The one or more shields may cover the arms on at least one side for protection. The one or more jaw guards may be utilized with or without the shields, and may or may not be integral with the shields. The one or more jaw guards have a number of benefits, such as protecting the jaws, positioning the jaws, being utilized as levers to help remove the jaws, and being utilized to prevent separation of the side-lap seam.